<!DOCTYPE html>
<html lang="en"/>
<head>
    <meta charset="UTF-8"/>
    <title>test</title>
</head>
<body>
<form method="post" action="/test" enctype ="multipart/form-data">
    <input type="file" name="file"/>
    <input type="submit" value="测试提交">
</form>
</body>
</html>